I don't find that's enough to throw me out of a story. The thing that usually gets me are historical errors. Like the otherwise great mystery story set in 1930s NYC where a police officer calls an unmarried woman "Ms." THREE times. And later the protagonist and her boyfriend are dancing to a song written in 1950.

Or the mystery set in Gold Rush-era Alaska where the protagonist talked about someone being "in her personal space."

After those a small town with multiple bookstores is small potatoes.